There's lots of room for confusion here as everyone (including Richard Porter of the BBC it would seem) is now basing what they think on what's either associated with the 'original' BBC WORLD (GMT) 41 minute source file which was at
www.archive.org, or the clip (allegedly) from BBC NEWS 24 which seems to have a BST (+5 EDT) time stamp on its banner and was put up on the web later in the week (one being the Alex Jones site).
Yes GMT is +4 EDT and EDT is the time *associated* with the 41 minute BBC WORLD file which was available at
www.archive.org until mid week (and may be coming back). The problem is the word 'associated' as there's reason to believe that an .xml file at the
www.archive.org site was edited on 18 February (which was coincidentally? the day that the BBC 911 Conspiracy episode was broadcast). That file is 'associated' with the actual downloadable file 1GB file called V08591-16.mpg but the 1GB file itself contains no time stamp or any other source identifying or authenticating information.
In the absence of the BBC being able to authenticate the BBC WORLD 41 minute clip's time of broadcast (and other 'live' characteristics against other copies), everyone is inferring its characteritics (including Richard Porter it would seem) when what we really needed was provenance given the unusual circumstances and history. It may well be genuine and untampered with, as may the BBC NEWS 24, but as there's at least motive to discredit the BBC in the wake of their 18th February 911 Conspiracy episode and as there have been some odd goings on at
www.archive.org in recent weeks (including the moving of servers, files that should not have been downloadable being downloadable, etc etc - see discussion
http://www.archive.org/iathreads/post-view.php?id=106772), there's nothing to be lost by being cautious, and attempting to get the BBC and INTERNET ARCHIVE to forensically confirm the authenticity of both clips.
The British 9/11 Truth Campaign :: View topic - BBC World reported WTC7 collapse before it happened